I'm probably terminally stupid, but I don't see how any court can use any law to require any person or company to create something that doesn't exist.
In bricks-and-mortar terms, to me it's the equivalent of getting a search warrant for a rented house. The tenants won't open the door, so the .gov goes to the landlord and says, "Open the door." Landlord says, "I can't, I gave the keys to the tenant." Can the .gov really tell the landlord "So YOU hire a locksmith and make us a key?" I don't think so.